/Engine/Source/Developer/CollectionManager/Public/ICollectionManager.h
Returns the list of collection names of the specified share type
void GetCollectionNames ( [ECollectionShareType::Type](API\Developer\CollectionManager\ECollectionShareType\Type) ShareType, [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > & CollectionNames ) const